What's the latest version of Firefox?
The latest version of Firefox is: 55.0.2
How to upgrade Firefox
If you already have Firefox but want to make sure that it's up to date, follow our guide which will show you how to trigger Firefox to check for updates: How to update Firefox.
If you don't have Firefox installed, you can download it from the Mozilla Foundation's website.
Firefox is a great web browser
Firefox was the first browser to really give Microsoft's Internet Explorer a run for its money back in the early 2000's and made popular a number of internet paradigms we take for granted these days.
For a fascinating description of the rise of Firefox's popularity and the struggle for browser dominance in the 1990s and 2000s, check out the Wikipedia page on Browser Wars.
Firefox has tabbed browsing, great security, is standards compliant, wide platform support (it runs on lots of operating systems and devices) and a huge number of Addons to add extra functionality.